The total number of ways is 45.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
Ms. Kelley needs to hire one biology teacher and one chemistry teacher for the science department.
The number of ways to choose one biology teacher from a pool of 9
is 9.
The number of ways to choose one chemistry teacher from a pool of 5
is 5.
Now,
According to the multiplication principle of counting.
The total number of ways to hire one teacher from each subject.
= The number of ways to choose one biology teacher x The number of ways to choose one chemistry teacher.
= 9 x 5
= 45
Therefore,
The total number of ways Ms. Kelley can hire a staff that includes one teacher in each subject is 45.
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What value for x makes the equation −13(x + 11) + 12x = -26 true
Answer:-117
Step-by-step explanation:
-13x-143+12x=-26
-x=-26+143=117
x=-117
In 2015 the highest tower in the world is the tower Burj Khalifa in Dubai.
It measures 828 meters of height
Alex have represented this tower at the scale 1=4000
What is the height of the tower in his draw ?
The height of the tower in Alex's drawing is 20.7 centimeters.
What is Unit of Measurement?A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
We need to find the height of the tower in Alex's drawing.
Let us multiply the actual height of the tower by the scale factor.
Scale factor = 1 : 4000
Height of the actual tower = 828 meters
Height of the tower in Alex's drawing = 828 meters x (1/4000) = 0.207 meters or 20.7 centimeters.
Therefore, the height of the tower in Alex's drawing is 20.7 centimeters.
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Qualitative data contribute to analysis and should aid the explanation of a process that may otherwise be unclear if explained by quantitative data only. (T/F)
The given statement "Qualitative data contribute to analysis and should aid the explanation of a process that may otherwise be unclear if explained by quantitative data only." is true.
Qualitative data is non-numeric information that provides insight into attitudes, behaviors, motivations, and perceptions. It is typically collected through open-ended questions, observation, and interviews. Qualitative data can provide a rich and nuanced understanding of a process or phenomenon that may not be possible to obtain through quantitative data alone. This is because qualitative data can help to uncover the underlying reasons behind a process, how people experience it, and how it is perceived by different groups. As a result, qualitative data can provide valuable context and insight into a process that may otherwise be unclear if explained by quantitative data alone.
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If the measure of angle f g h is 64 degrees and the measure of angle e g d is (4 x + 8) degrees, what is the value of x?.
By the help of congruent , the measure of angle f g h is 64 degrees and the measure of angle e g d is (4 x + 8) degrees and the value of x is 14
Things that have precisely the same size and shape are said to be congruent. The shapes and sizes need to hold true regardless of how we flip, spin, or rotate the forms. Two triangles that are identical in size and shape are said to be congruent triangles. Even if we flip, turn, or rotate one of two congruent triangles, the other two remain congruent.Two triangles must have the same angles and, as a result, must be congruent if their sides are the same.The equal sides and angles may not be in the same location if there is a turn or flip, but they are still there.
The are congruent So,
4x+8=64
Solve for x
X=14
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Three friends go to a book fair. Allen spends $2.60. Maria spends 4 times as much as Allen. Akio spends $3.55 less than Maria.
How much does Akio spend?
PLS NEED THE HELP!!
Answer:
$6.85
Step-by-step explanation:
$2.60 x 4 is 10.4 and that is how much Maria spends. Akio spends $3.55 less than Maria. So, 10.4 - 3.55 which is 6.85 and that is the answer.
What is 76 degree F in C?
76 degrees Fahrenheit was found to be equal to approximately 24.4 degrees Celsius using the formula of conversion.
To convert Fahrenheit to Celsius, you can use the following formula:
Celsius = (Fahrenheit - 32) x 5/9
Plugging in 76 degrees Fahrenheit, we get:
Celsius = (76 - 32) x 5/9
Celsius = 44 x 5/9
Celsius = 220/9
Celsius ≈ 24.4
Therefore, 76 degrees Fahrenheit is approximately 24.4 degrees Celsius.
On the Fahrenheit scale, water freezes at 32 degrees Fahrenheit (°F) and boils at 212 °F, at standard atmospheric pressure.
On the Celsius scale, the freezing point of water is defined as 0 degrees Celsius (°C), and the boiling point of water is defined as 100 °C, at standard atmospheric pressure.
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which one of the following best describes the notion of the significance level of a hypothesis test?The probability of observing a sample statistic more extreme than the one actually obtained, assuming the null hypothesis is true
The probability of the type I error
The probability of the type II error
The Hypothesis test of probability of the type I error is True.
The Hypothesis test probability of the type II error is False.
The notion of the significance level of a hypothesis test is best described by the probability of observing a sample statistic more extreme than the one actually obtained, assuming the null hypothesis is true. This is also known as the "p-value." A significance level is often set beforehand, such as alpha (α) = 0.05, and if the p-value is less than alpha, the null hypothesis is rejected.
The probability of a type I error is related to the significance level. A type I error occurs when the null hypothesis is rejected when it is actually true. The probability of a type I error is represented by alpha (α) and is the level of significance that was set for the test.
The probability of a type II error is the probability of failing to reject a false null hypothesis. It is represented by beta (β) and depends on the sample size, the true value of the parameter being tested, and the level of significance set for the test.
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The graph represents y = −1/4 x − 3. Which coordinate pair is NOT a solution for the equation? Responses A(−8, −1) (−8, −1) B(0, −3) (0, −3) C(−2, −4) (−2, −4) D(4, −4) (4, −4) Question 2
The equation given in the problem is shown below:
[tex]y=-\frac{1}{4} x-3[/tex]
Here are the answer choices:
a) (-8,-1)
b) (0,-3)
c) (-2,-4)
d) (4,-4)
We are asked to choose the coordinate pair that is NOT a solution, so let's just test each option!
To test answer choice "a", plug in [tex]x=-8[/tex] and [tex]y=-1[/tex] into the original equation, then simplify:
Plug in values: [tex]-1=-\frac{1}{4} (-8)-3[/tex]
Multiply: [tex]-1=2-3[/tex]
Subtract: [tex]-1=-1[/tex]
Notice that we now have a true expression, therefore option "a" IS A SOLUTION, and is thus not the correct answer.
Repeat for option "b" (0, -3):
Plug in values: [tex]-3=-\frac{1}{4}(0)-3[/tex]
Multiply: [tex]-3=-3[/tex]
Notice that we now have a true expression, therefore option "b" IS A SOLUTION, and is thus not the correct answer.
Repeat for option "c" (-2, -4):
Plug in values: [tex]-4=-\frac{1}{4}(-2)-3[/tex]
Multiply: [tex]-4=\frac{1}{2} -3[/tex]
Subtract: [tex]-4=-\frac{5}{2}[/tex]
Notice that we now have a false expression, therefore option "c" IS NOT SOLUTION, and is thus the correct answer.
To ensure we have the right option, check option "d" as well (4, -4):
Plug in values:[tex]-4=-\frac{1}{4} (4)-3[/tex]
Multiply: [tex]-4=-1-3[/tex]
Subtract: [tex]-4=-4[/tex]
Notice that we now have a false expression, therefore option "d" IS A SOLUTION, and is thus not the correct answer.
Notice that we have now checked all possible options and only option "c" was evaluated as a false expression, therefore option C is the correct choice in regard to this question.
Let me know if you have any questions!
Why is the lac curve called the envelope curve?
The lac curve, also known as the envelope curve, is a curve that shows the maximum amount of work that can be done in a given period of time.
It is defined by the equation: W = min {W1 + W2, W3, W4, ..., Wn}, where W1, W2, W3, W4, ..., and Wn are the individual work tasks. The envelope curve is called such because it forms an envelope that encompasses all of the individual tasks on the graph, visually representing the maximum amount of work that can be done within the given timeline. This curve can be used to assess the efficiency of a task or project, as well as to analyze the impact of changes in the workload, deadlines, and resources.
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help me answer this pls
Since [tex]1 - \sin^{2}{\theta} = \cos^{2}{\theta}[/tex], the trigonometric expression [tex]\frac{\sin{\theta}}{\sqrt{1 - \sin^{2}{\theta}}} = \tan{\theta}[/tex] is proven.
How to prove the trigonometric expression?The trigonometric expression for this problem is defined as follows:
[tex]\frac{\sin{\theta}}{\sqrt{1 - \sin^{2}{\theta}}} = \tan{\theta}[/tex]
The identity used for the proof is given as follows:
[tex]\sin^{2}{\theta} + \cos^{2}{\theta} = 1[/tex]
Hence:
[tex]1 - \sin^{2}{\theta} = \cos^{2}{\theta}[/tex]
Replacing on the left side of the expression, we have that:
[tex]\frac{\sin{\theta}}{\sqrt{1 - \sin^{2}{\theta}}} = \frac{\sin{\theta}}{\sqrt{cos^{2}{\theta}}}[/tex]
Taking the square root:
[tex]\frac{\sin{\theta}}{\sqrt{1 - \sin^{2}{\theta}}} = \frac{\sin{\theta}}{\cos{\theta}}[/tex]
The tangent is given as the division of the sine by the cosine, hence:
[tex]\frac{\sin{\theta}}{\cos{\theta}} = \tan{\theta}[/tex]
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Need some help please
x+6y+10
llllllllllllllllllllllllllllllllllllllllllllllllll
Need help!
Use the Savings plan to find the amount A=? if monthly payments are $250 with APR=4% for 10 years.
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Here we go ~
The required formula is :
[tex] \qquad \dashrightarrow \sf \: A = P \times \dfrac{{\bigg(1 + \dfrac{APR}{n} \bigg) }^{ny} - 1}{\dfrac{APR}{n}}[/tex]
[tex] \textsf{A = Total accumulated savings } [/tex][tex] \textsf{P = regular deposit } [/tex][tex] \textsf{APR = annual percentage rate } [/tex][tex] \textsf{n = number of payment period per year} [/tex][tex] \textsf{y = number of years } [/tex]Now, plug in the values ~
[tex] \qquad \dashrightarrow \sf \: A = 250 \times \dfrac{{\bigg(1 + \dfrac{0.04}{12} \bigg) }^{(12 \times 10)} - 1}{\dfrac{0.04}{12}}[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times \dfrac{{\bigg(1 + 0.0033 \bigg) }^{(12 0)} - 1}{0.0033}[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times \dfrac{{\bigg(1.0033 \bigg) }^{(12 0)} - 1}{0.0033}[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times \dfrac{1.4908- 1}{0.0033}[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times \dfrac{0.4908}{0.0033}[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times 147.249[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times 147.2498[/tex]
[tex] \qquad \dashrightarrow \sf \: A = 250 \times 147.2498[/tex]
[tex] \qquad \dashrightarrow \sf \: A =\$ 36812.45[/tex]
That's the required value ~
how to calculate the median in excel?
Answer:
Step-by-step explanation:
By using the Median Function in Excel =Median()
Help please the question is in the picture
Answer:
a) [tex]W(x) = 0.50 (3^x)[/tex]
W = tickets worth in $
x = number of balloons popped
b) For 8 balloons popped, number of tickets = 6,561
Tickets worth = [tex]\$ 3,280.50[/tex]
Step-by-step explanation:
The relation between number of balloons popped(x) and the number of tickets is
[tex]f(x) =3 ^ x\\\\f(1) = 3^1 = 3\\\\f(2) = 3^2 = 9\\\\f(3) = 3^3 = 27\\\\f(4) = 3^4 = 81[/tex]
each ticket is worth 50 cents
So for x tickets
[tex]W(x) = 0.50 (3^x)[/tex]
Number of tickets for 8 balloons popped
f(x) = 3^8
= [tex]f(x) = 3^8 = 6,561[/tex]
Ticket worth = [tex]0.5 \times 6,561 = \$ 3,280.50[/tex]
can anyone help me with this
Use the Exterior Angle Theorem to find the measure of each angle.
mangleC =
°
mangleD =
°
mangleDEC
The Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the 2 nonadjacent interior angles. That means that the measure of angle DEF is equal to the sum of measure of angle C and measure of angle D. Substituting known values gives you 2y + 9 + 6y + 10 = 115, then you can solve
8y + 19 = 115
8y = 96
y = 12
The measure of angle C is 33 degrees, the measure of angle D is 82 degrees, and because the measure of angle DEF is 115 degrees, its supplement angle (DEC) measures 65 degrees.
If m∠A = 50° and m∠B = 45°, what is m∠H?
(If anyone knows all the answer to any of these please provide a link.)
(It's called Chapter 5 Test, 3B Ratio, Proportion, and Similar Figures)
The measure of m∠H in the triangle is 85°.
How to find the measure of m∠H?
Similar triangles are two triangles that have the same shape but can have different sizes. More specifically, two triangles are similar if their corresponding angles are congruent and their corresponding sides are proportional.
Since ΔABC and ΔFGH are similar, we can say:
m∠A = m∠F
m∠B = m∠G
m∠C = m∠H
m∠A + m∠B + m∠C = 180° (sum of angles in a triangle)
We have m∠A = 50° and m∠B = 45°
50° + 45° + m∠C = 180°
m∠C = 180° - 50° - 45°
m∠C = 85°
Since m∠C = m∠H
Thus, m∠H = 85°
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HELP ASAP compare these
1.) 2 (1/5)x-5
2.) y=2x
Both the equations cut at the point (- 3.125, - 6.25).
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The equations are,
1) 2(1/5)x - 5
2) y = 2x
Now, We can draw the equations by using tool,
Hence, We get the graph of function 2(1/5)x - 5 shows by green line and y = 2x shows by red line.
Clearly, Both the function are cut at the point (- 3.125, - 6.25).
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Find the value of p for which the polynomial x3 + 4x²-px-18 is exactly divisible by x-2. Hence factories the polynomial
Solution in da attachment!! :)
A student has a collection of 72 baseball cards. All of the cards are stored in
an album with 8 cards on each page. Which expression can be used to find the
total number of pages of baseball cards in the student's album?
The required expression that can be used to find the total number of pages of baseball cards in the student's album is P = 72 / 8.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
To find the total number of pages of baseball cards in the student's album, we need to divide the total number of cards by the number of cards per page.
Let's call the number of pages "P". Then we have:
P = 72 / 8
So, the number of pages is equal to 9.
So, the expression that can be used to find the total number of pages of baseball cards in the student's album is P = 72 / 8.
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(Bradenton Bakery is baking a cake for a customer's quinceañera. The cake mold is shaped like a cylinder with a diameter of 8 inches and height of 6 inches.
Which of the following shows a correct method to calculate the number of cubic units of cake batter needed to fill the mold?
Approximate using pi equals 355 over 113. )
V equals 355 over 113 times 8 squared times 6
V equals 355 over 113 times 6 squared times 8
V equals 355 over 113 times 6 squared times 4
V equals 355 over 113 times 4 squared times 6
The method that is used to calculate the cubic units of cake batter needed to fill the mold is V equals 355 over 113 times 4 squared times 6. (third option)
How much cake batter is needed to fill the mold?A cylinder is a three-dimensional object. It is a prism with a circular base. The amount of cake batter that is needed to fill the mold is equal to the volume of the cylinder.
Volume of a cylinder = πr²h
Where:
π = 355 / 113 = pir = radius = diameter / 2 = 8 / 2 = 4 inchesh = height= 355/133 x 4² x 6
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The answer is V equals 355 over 113 times 4 squared times 6, thus, option (d)
The formula for volume of a cylinder is: V= πr2h, so if pi = 355/113 then
V= (355/113)(4)2(6)
Goodluck! ~izzy~
6) Brand X sells 25 kg bags of mixed nuts
that contain 41% peanuts. To make their
product they combine Brand A mixed nuts
which contain 35% peanuts and Brand B
mixed nuts which contain 45% peanuts.
How much of each do they need to use?
Solve this problem pls
The simplification of the given expression
[tex]3 \frac{1}{5} x + 10 \frac{7}{9} - 2 \frac{2}{5} x - 10 \frac{8}{9} [/tex]
is
[tex]\frac{4}{5}x - \frac{1}{9}x[/tex]
How to simplify expressions?[tex]3 \frac{1}{5} x + 10 \frac{7}{9} - 2 \frac{2}{5} x - 10 \frac{8}{9} [/tex]
Change into improper fraction
[tex] = \frac{16}{5} x + \frac{97}{9} - \frac{12}{5}x - \frac{98}{9} [/tex]
[tex] [/tex]
Collect like terms
[tex]= \frac{16}{5}x - \frac{12}{5}x + \frac{97}{9} - \frac{98}{9} [/tex]
Subtract
[tex] = \frac{4}{5}x - \frac{1}{9}x [/tex]
Consequently, the solution to the expression is
[tex] = \frac{4}{5}x - \frac{1}{9}x [/tex]
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Answer:
= 36x - 5.
Step-by-step explanation:
Sorry for my cancellation
Sixty percent of the students preferred raisins to banana chips. If there
were 95 students in all, how many preferred banana chips
The number of students who preferred banana chips are 57.
What is the percentage?The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that sixty per cent of the students preferred raisins to banana chips. If there were 95 students in all, the number of the students will be calculated as:-
Number = 95 x 60%
Number = 95 x 60 / 100
Number = 95 x 0.6
Number = 57
Therefore, the number of students who choose banana chips is 57.
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i need help. thank you
The following compositions are shown below:
Case 1
f ° g (x) = x, g ° f (x) = x
The two functions are inverses of each other.
Case 2
f ° g (x) = x, g ° f (x) = x
The two functions are inverses of each other.
How to find the composition between two functions and determine if the two functions are inverses or not
In this problem we need to determine the composition between two functions and determine if both functions are inverses of each other. A composition is defined below:
f ° g (x) = f [g (x)]
Where the independent variable of the function f(x) is substituted by function g(x). Two functions are inverses if and only if the following condition is fulfilled:
f[g (x)] = g[f (x)]
Now we proceed to determine the compositions and relationships for each case:
Case 1
f(x) = 3 · x
g(x) = x / 3
f ° g (x) = 3 · (x / 3)
f ° g (x) = x
g ° f (x) = (3 · x) / 3
g ° f (x) = x
Functions f(x) and g(x) are inverses of each other.
Case 2
f(x) = (x - 3) / 2
g(x) = 2 · x + 3
f ° g (x) = [(2 · x + 3) - 3] / 2
f ° g (x) = 2 · x / 2
f ° g (x) = x
g ° f (x) = 2 · [(x - 3) / 2] + 3
g ° f (x) = (x - 3) + 3
g ° f (x) = x
Functions f(x) and g(x) are inverses of each other.
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How many cg are in g?
Answer:
there are 100 centigrams in a gram
Step-by-step explanation:
Can someone help me with this aleks question
The value of angles are,
∠ H = 20°
∠ G = 100°
∠ I = 60°
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
Given that;
Two triangles are similar.
Now, We have in triangle XYZ,
∠Y = 20°
∠Z = 100°
Hence, ∠ X = 180 - (100 + 20)
∠ X = 60°
Thus, By definition of similarity;
∠ H = ∠ Y = 20°
∠ G = ∠ Z = 100°
∠ X = ∠ I = 60°
Thus, The value of angles are,
∠ H = 20°
∠ G = 100°
∠ I = 60°
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Can y’all help me and solve for x
and I’m not sure if my answer is right
Given the following cash inflow at the end of each year, what is the future value of this cash flow at 5%, 8%, and 17% interest rates at the end of year 7? What is the future value of this cash flow at 5% interest rate at the end of year 7?
A $1000 cash inflows at the end of each year would have a future value of $8,142.01, $8,922.80 and $11.772012 at the end of the year 7 for interest rates of 5% , 8% and 17% respectively.
Future Value:Annuities are a financial instrument that generates a regular stream of cash. They have both a present and future value dependent upon the value of the cash payment, the number of payment periods and the interest rate. This question does not specify the cash inflow amount so an answer will be generated that can be scaled on multiples of $1000.
Let C represent the cash inflow at the end of each year. The future value (FV) of this cash inflow is given by:
FV = [tex]C[((1+i)^n-1)/i][/tex]
where i is the annual interest rate and n is the number of years.
(a) For i = 5% and n = 7
FV = [tex]C [((1+0.05)^7-1)/0.05][/tex]
FV= C[(1.047100-1)/0.05]
FV = C [8.142008]
(b) For i = 8% and n = 7
FV = [tex]C [((1+0.08)^7-1)/0.08][/tex]
FV = C[(1.713824 - 1)/0.08]
FV = C[8.922803]
(c) For i = 17% and n = 7
FV = [tex]C [((1+0.17)^7-1)/0.17][/tex]
FV = C[(3.001242 - 1)/ 0.17]
FV = C[11.772012]
Therefore, A $1000 cash inflows at the end of each year would have a future value of $8,142.01, $8,922.80 and $11.772012 at the end of the year 7 for interest rates of 5% , 8% and 17% respectively.
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Find the radius of each circle. round your answer to the nearest tenth
area=64π ft²
Answer: 64 MBS/43XY
Step-by-step explanation:
courseeeeeeeeee
Answer: r =[tex]\sqrt{4/\pi } =\sqrt{64/\pi } =4.51352[/tex]
Step-by-step explanation: